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S82121 Stainless Steel vs. AWS ENiCu-7

S82121 stainless steel belongs to the iron alloys classification, while AWS ENiCu-7 belongs to the nickel alloys. There are 24 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is S82121 stainless steel and the bottom bar is AWS ENiCu-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
160
Elongation at Break, % 28
34
Poisson's Ratio 0.27
0.32
Shear Modulus, GPa 78
62
Tensile Strength: Ultimate (UTS), MPa 730
550

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Melting Completion (Liquidus), °C 1430
1270
Melting Onset (Solidus), °C 1380
1230
Specific Heat Capacity, J/kg-K 480
430
Thermal Conductivity, W/m-K 15
21
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
3.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 14
50
Density, g/cm3 7.7
8.7
Embodied Carbon, kg CO2/kg material 2.8
8.0
Embodied Energy, MJ/kg 40
110
Embodied Water, L/kg 150
250

Common Calculations

Stiffness to Weight: Axial, points 14
10
Stiffness to Weight: Bending, points 25
21
Strength to Weight: Axial, points 26
17
Strength to Weight: Bending, points 23
17
Thermal Diffusivity, mm2/s 4.0
5.5
Thermal Shock Resistance, points 20
18

Alloy Composition

Aluminum (Al), % 0
0 to 0.75
Carbon (C), % 0 to 0.035
0 to 0.1
Chromium (Cr), % 21 to 23
0
Copper (Cu), % 0.2 to 1.2
20.6 to 38
Iron (Fe), % 66.7 to 75.4
0 to 2.5
Manganese (Mn), % 1.0 to 2.5
0 to 4.0
Molybdenum (Mo), % 0.3 to 1.3
0
Nickel (Ni), % 2.0 to 4.0
62 to 69
Nitrogen (N), % 0.15 to 0.25
0
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 1.5
Sulfur (S), % 0 to 0.010
0 to 0.015
Titanium (Ti), % 0
0 to 1.0
Residuals, % 0
0 to 0.5